Abstract：Male hypogonadism in children is common in pediatric endocrineclinic,characterized by delayed puberty, gonadal dysgenesis and the hypofunction of hypothalamic-pituitary-gonadal axis. The causes of hypogonadism can be divided into 2 categories: primary hypogonadism and secondary hypogonadism(hypogonadotropic). Male hypogonadism in children and adolescents is common clinically, while hypogonadism in newborns and infants is often ignored. There still have been many disputes in the diagnosis and treatment of childhood hypogonadism. In this paper, the problem will be discussed in order to proride reference for pediatricians.